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作者:

Wang, Yu (Wang, Yu.) | Jin, Yuhong (Jin, Yuhong.) | Duan, Yuhao (Duan, Yuhao.) | Jia, Mengqiu (Jia, Mengqiu.)

收录:

EI Scopus SCIE

摘要:

Three-dimensional fabricated Fe3O4 quantum dots/graphene aerogel materials (Fe3O4 QDs/GA) were obtained from a facile hydrothermal strategy, followed by a subsequently heat treatment process. The Fe3O4 QDs (2-5 nm) are anchored tightly and dispersed uniformly on the surface of three-dimensional GA. The as-prepared anode materials exhibit a high reversible capacity of 1078 mAh g(-1) at a current density of 100 mA g(-1) after 70 cycles in lithium-ion batteries (LIBs) system. Moreover, the rate capacity still remains 536 mAh g(-1) at 1000 mA g(-1). The enhanced electrochemical performance is attributed to that the GA not only acts as a three-dimensional electronic conductive matrix for the fast transportation of Li+ and electrons, but also provides with double protection against the aggregation and pulverization of Fe3O4 QDs during cycling. Apparently, the synergistic effects of the three-dimensional GA and the quantum dots are fully utilized. Therefore, the Fe3O4 QDs/GA composites are promising materials as advanced anode materials for LIBs.

关键词:

Anode materials Fe3O4 quantum dots Graphene aerogel Lithium-ion batteries

作者机构:

  • [ 1 ] [Wang, Yu]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 2 ] [Duan, Yuhao]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 3 ] [Jia, Mengqiu]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China
  • [ 4 ] [Jin, Yuhong]Beijing Univ Technol, Beijing Guyue New Mat Res Inst, Beijing 100124, Peoples R China

通讯作者信息:

  • [Jia, Mengqiu]Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, Beijing 100029, Peoples R China

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来源 :

IONICS

ISSN: 0947-7047

年份: 2017

期: 8

卷: 23

页码: 2005-2011

2 . 8 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:94

中科院分区:4

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 7

ESI高被引论文在榜: 0 展开所有

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